/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#ifndef OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP

#define OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP

// For Sun Studio - implementation is in solaris_x86_64.il.

extern "C" {

  int32_t _Atomic_add(int32_t add_value, volatile int32_t* dest);

  int64_t _Atomic_add_long(int64_t add_value, volatile int64_t* dest);

  int32_t _Atomic_xchg(int32_t exchange_value, volatile int32_t* dest);

  int8_t  _Atomic_cmpxchg_byte(int8_t exchange_value, volatile int8_t* dest,

                               int8_t compare_value);

  int32_t _Atomic_cmpxchg(int32_t exchange_value, volatile int32_t* dest,

                          int32_t compare_value);

  int64_t _Atomic_cmpxchg_long(int64_t exchange_value, volatile int64_t* dest,

                               int64_t compare_value);

}

template<size_t byte_size>

struct Atomic::PlatformAdd

  : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >

{

  template<typename D, typename I>

  D add_and_fetch(D volatile* dest, I add_value, atomic_memory_order order) const;

};

// Not using add_using_helper; see comment for cmpxchg.

template<>

template<typename D, typename I>

inline D Atomic::PlatformAdd<4>::add_and_fetch(D volatile* dest, I add_value,

                                               atomic_memory_order order) const {

  STATIC_ASSERT(4 == sizeof(I));

  STATIC_ASSERT(4 == sizeof(D));

  return PrimitiveConversions::cast<D>(

    _Atomic_add(PrimitiveConversions::cast<int32_t>(add_value),

                reinterpret_cast<int32_t volatile*>(dest)));

}

// Not using add_using_helper; see comment for cmpxchg.

template<>

template<typename D, typename I>

inline D Atomic::PlatformAdd<8>::add_and_fetch(D volatile* dest, I add_value,

                                               atomic_memory_order order) const {

  STATIC_ASSERT(8 == sizeof(I));

  STATIC_ASSERT(8 == sizeof(D));

  return PrimitiveConversions::cast<D>(

    _Atomic_add_long(PrimitiveConversions::cast<int64_t>(add_value),

                     reinterpret_cast<int64_t volatile*>(dest)));

}

template<>

template<typename T>

inline T Atomic::PlatformXchg<4>::operator()(T volatile* dest,

                                             T exchange_value,

                                             atomic_memory_order order) const {

  STATIC_ASSERT(4 == sizeof(T));

  return PrimitiveConversions::cast<T>(

    _Atomic_xchg(PrimitiveConversions::cast<int32_t>(exchange_value),

                 reinterpret_cast<int32_t volatile*>(dest)));

}

extern "C" int64_t _Atomic_xchg_long(int64_t exchange_value, volatile int64_t* dest);

template<>

template<typename T>

inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,

                                             T exchange_value,

                                             atomic_memory_order order) const {

  STATIC_ASSERT(8 == sizeof(T));

  return PrimitiveConversions::cast<T>(

    _Atomic_xchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),

                      reinterpret_cast<int64_t volatile*>(dest)));

}

// Not using cmpxchg_using_helper here, because some configurations of

// Solaris compiler don't deal well with passing a "defined in .il"

// function as an argument.  We *should* switch to using gcc-style

// inline assembly, but attempting to do so with Studio 12.4 ran into

// segfaults.

template<>

template<typename T>

                                                T compare_value,

                                                atomic_memory_order order) const {

  STATIC_ASSERT(1 == sizeof(T));

  return PrimitiveConversions::cast<T>(

    _Atomic_cmpxchg_byte(PrimitiveConversions::cast<int8_t>(exchange_value),

                         reinterpret_cast<int8_t volatile*>(dest),

                         PrimitiveConversions::cast<int8_t>(compare_value)));

}

template<>

template<typename T>

                                                T compare_value,

                                                atomic_memory_order order) const {

  STATIC_ASSERT(4 == sizeof(T));

  return PrimitiveConversions::cast<T>(

    _Atomic_cmpxchg(PrimitiveConversions::cast<int32_t>(exchange_value),

                    reinterpret_cast<int32_t volatile*>(dest),

                    PrimitiveConversions::cast<int32_t>(compare_value)));

}

template<>

template<typename T>

                                                T compare_value,

                                                atomic_memory_order order) const {

  STATIC_ASSERT(8 == sizeof(T));

  return PrimitiveConversions::cast<T>(

    _Atomic_cmpxchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),

                         reinterpret_cast<int64_t volatile*>(dest),

                         PrimitiveConversions::cast<int64_t>(compare_value)));

}

#endif // OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP